Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

2. The condition of refrigerant after passing through the condenser in a vapour compression system is

3. In a refrigeration system, heat absorbed in comparison to heat rejected is

4. The domestic refrigerator uses following type of compressor

5. Most thermostatic expansion valves are set for a superheat of

6. A thermostatic expansion valve in a refrigeration system

7. For obtaining high COP, the pressure range of compressor should be

8. A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

9. The boiling point of ammonia is

10. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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